# NEW* Built-in PDF viewer* Firefox will offer to reset the Awesomebar search provider, if it has been changed by third-party software or through about:config# CHANGED* Canvas elements can export their content as an image blob using canvas.toBlob()* Startup performance improvements # DEVELOPER* Debugger now supports pausing on exceptions and hiding non-enumerable properties* Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)* There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)* Web Console CSS links now open in the Style Editor# HTML5* CSS @page is now supported* CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)* CSS text-transform now supports full-width# FIXED* Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode